1. Demonstrations for teaching and learning- This package is a set of demonstration functions
that can be used in a classroom to demonstrate
statistical concepts, or on your own to better
understand the concepts or the programming.

2. factorplot- factorplot provides numerical and graphical summaries of factor-level differences in GLMs. It produces all pairwise hypotheses tests with either the exact pairwise difference and variance or user-supplied quasi-variances or floating absolute risks.